Drain-coupling for porcelain troughs.



I. McNEIL,

DRAIN COUPLING FOR PORCELAIN TROUGHS.

APPLICATION FILED FEB. 3.1917- Patented Jan. 15, 1918.

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i as an JOHN MGNEIL, OF CINCINNATI, OHIO, ASSIGNOR TO TI-IE JOHN DOUGLAS COMPANY, OF. CINCINNATI, OHIO, A CORPORATION OF OHIO.

DRAIN-COUPLING FOR PORCELAIN TROUGHS.

Specification of Letters Patent. Patented Jan. 15, llfilllfi.

Application filed February 3, 1917. Serial No. 146,331.

To all whom it may concern Be it known that 1, JOHN MGNEIL, a'citizen of the United States of America, and resident of Cincinnati, in the county of Hamilton and State of Ohio, have invented a new and useful Improvement in Brain Couplings for Porcelain Troughs, of which the following is a specification.

An object of my invention is to produce a drain coupling for porcelain troughs which will prevent the seepage of drainage between it and the trough to which it is connected.

A further object is to produce a drain coupling for porcelain troughs, which will permit of a leak proof joint being formed between the trough and the soil pipe to which it is to be connected, whether the trough is in accurate alineinent with the soil pipe or not.

These and other objects are attained in the construction described in the following specification and illustrated in the acco1npanying drawings, in which;

Figure 1 is a fragmental perspective View of a trough having a drain coupling embodying my invention.

Fig. 2 is a plan view of a porcelain trough drain coupling, upon an enlarged scale.

Fig. 3 is a sectional view taken on the line 3-3 of Fig. 2, upon an enlarged scale.

My improved drain coupling is designed for use with porcelain troughs in which the surfaces against which the coupling is made, are liable to be rough, uneven or warped by the firin operation in constructing the trough. lieretofore, drain coupling connections for porcelain troughs have been made with a device necessitating the application of rubber or fiber washers. These couplings are at best more or less unsatisfactory since the tendency is constantly for the joint be tween the coupling and the trough to open up, either from deterioration of the rubber or fiber washer or from natural settling or shifting of position of the trough with relation to the drain pipe with which it is connected. In troughs designed for certain purposes the drainage carried therefrom is of such a nature as to destroy the washers very rapidly when the slightest seepage of drainage occurs between the coupling and the trough. My improved drain coupling consists of a collar 4 of a diameter considerably smaller than the diameter of the opening provided in the bottom of the trough 5 to which the drain pipe is to be connected. A short distance below the upper end of collar 4 an annular flange 7 is formed, this flange being of suiiicient-width to extend considerably beyond the space between the collar 4 and the porcelain trough 5 so as to bear against the under side or bottom of the trough as disclosed in Fig. 3. This leaves an upwardly extending portion 8 of the collar which enters the opening in the trough and also provides a downwardly extending portion 9 of the collar to which the drain pipe connection is made in any suitable manner. At diametrically opposite points of the inner wall of the collar 4, lugs 10 and 11 are formed these lugs being screw threaded internally to receive screws 12 and 13 provided for the purpose of holding a drain cover 14 in position in an enlarged re" cess 15 formed in the porcelain trough for this purpose.

In securing the coupling to the porcelain trough, flange 7 is brought into engagement with the bottom of the trough, the upwardly extending portion 8 being located centrally of the opening in the trough provided for its reception. Melted lead or litharge is now poured into the space between the upwardly extending portion 8 and the walls of the trough opening in which it is located. The lead or litharge is then worked into a funnel shaped formation 16 as disclosed in Fig. 3, and a thin layer 17 thereof is placed on the bottom of the recess 15 in which the cover plate 1a is to be located, additional lead or litharge 18 being poured into the space between the periphery of the cover plate and the walls of the recess 15. Such a construction renders the joint between the trough and the coupling absolutely proof against the seepage of drainage between the coupling and the trough since there is no ma terial of a nature which would deteriorate upon being subjected to the corrosive actlon of the drainage passing from the trough into the soil pipe. An additional advantage lies in the fact that whether the trough 1s plumb or whether its bottom is rough, uneven or warped, the efficiency of the oint formed under these conditions is not impaired, there being absolutely no tendency for it to loosen and to permit of drainage entering it,

Having thus described my invention, What Iclaimis: a

1. A drain coupling for a porcelain trough j collar, a perforated cover, screwsengagmg the lugs and the collar and adapted to sehaving a coupling receiving opening formed therein, comprising a collar adapted to pro-- ject into the opening, a flange formed on the collar adapted to engage the surface of the trough surrouncllng the collar receiving opening,a perforated cover above the open.-.

ing'and secured to the collar, and a fusible packing located between the collar and the trough.

2. A drain coupling fOl'POICQlELlH troughs having coupling receiving openings formed therein, comprising a collar adapted to project into the opening of the trough, a flange formed on the-collar adapted to engage the surface of the trough surrounding" the col larreceiving opening, lugs formed on the cure the collar above the opening, and a fusible packing located between the collar and the trough.

In testimony whereof, I have'hereunto subscribed my name this 1st day of February, 1917.

JOHN MoNEIL.

Witnesses lVALTnR F. MURRAY, K'Trronnron Boennr.

Copies of this patent-may be obtained for five cents eaoh,'by addres sing the Commissioner of Patents.

" Washington, D. C. 

